Which tty gets the X server?

[MR ZenWiz]

On Thu, Jan 6, 2011 at 5:02 PM, Tom H <tomh0665 at gmail.com> wrote:
>
> It's because console-kit-daemon keeps the vt "open".
>
> If you kill console-kit-daemon you can then run "deallocvt 7" and re-use vt7.
>

Once I kill console-kit-daemon, tty7 is blank and does not appear to
be available for alternate logins.  How do I change that (other than
logging out or rebooting)?